takes coding to do the art design, no? At the very least, the guy designing uniform packs or ship exteriors would be better spent designing art for the MISSIONS. If he can design other shit, why can't he take that same skill and design new maps? Maybe we could have more than 3 kinds of alien base? If it's not being used for new missions, go back and remaster more old missions with new interiors.
If it's that they've got these art guys with no other skill sets, and can only do shirts and ships, then they've royally screwed up and overhired one type while underhiring the people that actually can improve the game for members already paying.
Real answer is likely that they've already GOT my money, so they're putting emphasis into getting money from OTHER sources (or more of my money for extras) rather than giving me more content for money I've already given them...